CN-121790538-B - Lamination method and lamination equipment

CN121790538BCN 121790538 BCN121790538 BCN 121790538BCN-121790538-B

Abstract

The application relates to a lamination method and lamination equipment, wherein the lamination method can be applied to the lamination equipment, the lamination equipment comprises a positioning platform, a first lighting device and a first image acquisition device, the positioning platform is used for setting pole pieces, the first lighting device and the first image acquisition device are positioned on one side of the positioning platform where the pole pieces are arranged, the first image acquisition device is used for acquiring a first image of the pole pieces on the positioning platform, the first lighting device is used for providing light supplementing when the first image acquisition device acquires the first image, based on the first image, a material area of the pole pieces can be identified from the first image, the actual position of the material area is determined, deviation information between the actual position and a standard position is calculated, and further correction is carried out on the pole pieces based on the deviation information. Therefore, the accurate correction of the pole piece can be realized, the situation that the lamination is scrapped due to unstable coating edges of the pole piece is avoided, namely, the loss of the manufacturing process is avoided, and the product yield is greatly improved.

Inventors

YU JIANGNAN
CHEN GANG
ZHANG YIPENG
MA WEI

Assignees

浙江吉利控股集团有限公司
浙江吉曜通行能源科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260304

Claims (10)

1. The lamination method is characterized by being applied to lamination equipment, wherein the lamination equipment comprises a positioning platform, a first lighting device and a first image acquisition device, the positioning platform is used for setting a pole piece, the first lighting device and the first image acquisition device are positioned on one side of the positioning platform where the pole piece is arranged, the first image acquisition device is used for acquiring a first image of the pole piece on the positioning platform, the first lighting device is used for providing light supplement when the first image acquisition device acquires the first image, and the method comprises the following steps: acquiring the first image, and identifying a material region of the pole piece from the first image; determining the actual position of the material area, and calculating deviation information between the actual position and a standard position; and correcting the deviation of the pole piece based on the deviation information.
2. The method of claim 1, wherein prior to rectifying the pole piece based on the deviation information, the method further comprises: determining whether the material region is incomplete; And if the material area is not incomplete, continuing to execute the step of rectifying the deviation of the pole piece based on the deviation information.
3. The method of claim 1, wherein the determining the actual location of the region and calculating deviation information between the actual location and a standard location comprises: determining the coordinates of each vertex angle in the material area based on a preset rectangular coordinate system; Determining the actual center point coordinates of the material areas and the angle deviation of the material areas and the standard material areas based on the coordinates of the top angles; and calculating the coordinate deviation between the actual center point coordinate and the center point coordinate of the standard material area, and determining the angle deviation and the coordinate deviation as the deviation information.
4. A method according to claim 3, wherein said rectifying the pole piece based on the deviation information comprises: correcting the position of the pole piece based on the coordinate deviation so as to enable the actual center point coordinate to be consistent with the center point coordinate of the standard material area; and carrying out angle deviation correction on the pole piece based on the angle deviation so as to eliminate the angle deviation.
5. The method of claim 1, wherein the first illumination device comprises a first light source and a second light source, wherein an illumination area of the first light source covers the pole piece, wherein an illumination area of the second light source covers a material area of the pole piece, and wherein the acquiring the first image comprises: And controlling the first light source and the second light source to be started, and acquiring the first image through the first image acquisition device.
6. The method of claim 5, wherein the first light source comprises at least two strip light sources, the second light source comprises a point light source, the at least two strip light sources are located on two sides above the positioning platform and correspond to two long sides of the pole piece, and the point light source is located above the positioning platform and corresponds to a material area of the pole piece.
7. The lamination device is characterized by comprising a positioning platform, a first lighting device and a first image acquisition device, wherein the positioning platform is used for setting a pole piece, the first lighting device and the first image acquisition device are positioned on one side of the positioning platform where the pole piece is arranged, the first image acquisition device is used for acquiring a first image of the pole piece on the positioning platform, the first lighting device is used for providing light supplement when the first image acquisition device acquires the first image, and the lamination device comprises: the acquisition and identification module is used for acquiring the first image and identifying the material area of the pole piece from the first image; the determining and calculating module is used for determining the actual position of the material area and calculating deviation information between the actual position and the standard position; And the deviation rectifying module is used for rectifying deviation of the pole piece based on the deviation information.
8. The lamination equipment is characterized by comprising a controller, a positioning platform, a first lighting device and a first image acquisition device; The positioning platform is used for setting the pole piece; The first illumination device and the first image acquisition device are positioned on one side of the positioning platform where the pole piece is arranged, and the first image acquisition device is used for acquiring a first image of the pole piece on the positioning platform; the controller is used for acquiring the first image, identifying a material area of the pole piece from the first image, determining the actual position of the material area, calculating deviation information between the actual position and a standard position, and rectifying deviation of the pole piece based on the deviation information.
9. An electronic device, comprising: a processor, and a memory coupled to the processor; the memory is used for storing a computer program; The processor is configured to invoke and execute the computer program in the memory to perform the lamination method as claimed in any of claims 1-6.
10. A storage medium storing a computer program which, when executed by a processor, implements the lamination method of any one of claims 1-6.

Description

Lamination method and lamination equipment Technical Field The application relates to the technical field of battery manufacturing, in particular to a lamination method and lamination equipment. Background The lamination process is a core process for forming the battery core of the lithium ion battery, and can alternately stack the cut positive and negative electrode plates and the diaphragm to form a stacked or laminated multilayer structure. Compared with the traditional winding technology, the process has the advantages that the stress distribution of the pole piece is more uniform in the charging and discharging process, and the curling effect is smaller, so that the square large battery cell with lower internal resistance, better multiplying power performance and longer cycle life can be manufactured. However, due to the influence of factors such as process flow and environment, the problems of poor pole piece alignment and the like often occur in the lamination process, so that the manufacturing process is lost, and the product yield is seriously reduced. Disclosure of Invention In view of the above, the present application is directed to providing a lamination method and lamination equipment, which can effectively improve the alignment degree of pole pieces, avoid the process loss, and further improve the product yield. The first aspect of the application provides a lamination method, which is applied to lamination equipment, the lamination equipment comprises a positioning platform, a first lighting device and a first image acquisition device, the positioning platform is used for setting a pole piece, the first lighting device and the first image acquisition device are positioned on one side of the positioning platform where the pole piece is arranged, the first image acquisition device is used for acquiring a first image of the pole piece on the positioning platform, the first lighting device is used for providing light supplement when the first image acquisition device acquires the first image, and the method comprises the following steps: acquiring the first image, and identifying a material region of the pole piece from the first image; determining the actual position of the material area, and calculating deviation information between the actual position and a standard position; and correcting the deviation of the pole piece based on the deviation information. Optionally, before the rectifying the pole piece based on the deviation information, the method further includes: determining whether the material region is incomplete; And if the material area is not incomplete, continuing to execute the step of rectifying the deviation of the pole piece based on the deviation information. Optionally, the determining the actual position of the material area and calculating deviation information between the actual position and a standard position include: determining the coordinates of each vertex angle in the material area based on a preset rectangular coordinate system; Determining the actual center point coordinates of the material areas and the angle deviation of the material areas and the standard material areas based on the coordinates of the top angles; and calculating the coordinate deviation between the actual center point coordinate and the center point coordinate of the standard material area, and determining the angle deviation and the coordinate deviation as the deviation information. Optionally, the rectifying the pole piece based on the deviation information includes: correcting the position of the pole piece based on the coordinate deviation so as to enable the actual center point coordinate to be consistent with the center point coordinate of the standard material area; and carrying out angle deviation correction on the pole piece based on the angle deviation so as to eliminate the angle deviation. Optionally, the first lighting device comprises a first light source and a second light source, an irradiation area of the first light source covers the pole piece, an irradiation area of the second light source covers a material area of the pole piece, and the acquiring the first image comprises: And controlling the first light source and the second light source to be started, and acquiring the first image through the first image acquisition device. Optionally, the first light source comprises at least two strip light sources, the second light source comprises a point light source, the at least two strip light sources are located on two sides above the positioning platform and are arranged corresponding to two long sides of the pole piece, and the point light source is arranged above the positioning platform and is arranged corresponding to a material area of the pole piece. A second aspect of the present application provides a lamination device applied to lamination equipment, the lamination equipment including a positioning platform, a first illumination device and a first image acquisition d